CN102909875A - Press machine based on ball screw and hinged rod force amplifier - Google Patents
Press machine based on ball screw and hinged rod force amplifier Download PDFInfo
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- CN102909875A CN102909875A CN2012104184096A CN201210418409A CN102909875A CN 102909875 A CN102909875 A CN 102909875A CN 2012104184096 A CN2012104184096 A CN 2012104184096A CN 201210418409 A CN201210418409 A CN 201210418409A CN 102909875 A CN102909875 A CN 102909875A
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Abstract
The invention provides a press machine based on a ball screw and a hinged rod force amplifier. The press machine comprises a servo motor, a driving wheel, a driven wheel and a press head for outputting pressure; the press machine further comprises a left ball screw and a right ball screw connected with the left right and the right end of a rotary shaft of the driven wheel respectively, and a left sleeve and a right sleeve movably sleeved on the nuts of the left ball screw and the right ball screw respectively; the hinged rod mechanism comprises a left upper hinged rod and a left lower hinged rod hinged with the left sleeve respectively, and a right upper hinged rod and a right lower hinged rod hinged with the right sleeve respectively; the upper ends of the left upper hinged rod and the right upper hinged rod are extended upwardly and hinged with left fixed pivot and right fixed pivot; and the lower ends of the left lower hinged rod and the right lower hinged rod are extended downwards and hinged with the left end and right end of the press head respectively. According to the press machine based on the ball screw and the hinged rod force amplifier, the press machine is high in transmission efficiency and locating precision and more environment-friendly.
Description
Technical field
The present invention relates to a kind of forcing press, relate in particular to a kind of forcing press based on ball screw and Toggle Force Amplifier.
Background technology
A large amount of hydraulic drive forcing presses that use in the machinery manufacturing industry.But, hydraulic drive is take hydraulic oil as working media, have inevitably leakage in relative motion surface, and the compressibility of the leakage of fluid and liquid can affect the accuracy of actuator movement, can't guarantee strict gearratio, so the positioning accuracy of hydraulic drive forcing press is lower; On the other hand, local pressure loss and larger along stroke pressure loss etc. makes the transmission efficiency of hydraulic drive forcing press lower in the fluid flow process.In addition, hydraulic oil is subjected to the impact of temperature, should not work under the environment of high temperature or low temperature, and the scope of application of hydraulic drive forcing press is restricted.The leakage of hydraulic oil and volatilization also can cause larger pollution to environment, and therefore, hydraulic drive forcing press and the current green manufacturing theory of advocating are also incompatible.
Ball screw is the actuated element that the most often uses on the precision optical machinery, and its major function is to convert linear movement to rotatablely moving, or changes torque axis into axial repetitiousness active force, has simultaneously high accuracy, invertibity and high efficiency characteristics concurrently.Ball screw is comprised of screw rod, nut and ball.Owing to having very little frictional resistance, ball screw is widely used in various industrial equipments and precision instrument.
The operation principle of ball leading screw driving is: when nut or bolt rotary, the ball of arranging between screw rod and nut is successively along the screw thread rolling path rolling, and ball impels screw rod or nut moving linearly simultaneously.In order to prevent that ball from rolling out along the screw thread raceway, be provided with the ball return mechanism at nut, consist of a ball-recirculation passage, by return mechanism, after ball is moved along roller surface, automatically return its circulation section start through catheter channel, thereby make ball participate in work at the screw thread raceway with keeping.
Summary of the invention
In order to overcome the defective of prior art, the purpose of this invention is to provide that a kind of positioning accuracy and transmission efficiency are higher, stable working and meet the forcing press of environment protection requirement.
For achieving the above object, the invention provides a kind of forcing press based on ball screw and Toggle Force Amplifier, it is characterized in that, described forcing press comprises servomotor, the driving wheel that is connected with the rotating shaft of described servomotor, the driven pulley that is in transmission connection with described driving wheel and the pressure head that is used for output pressure, and described forcing press also comprises:
Be connected to roll left ballscrew and the right ball screw at two ends, the left and right sides of the rotating shaft of described driven pulley, described driven pulley, the described axis that rolls left ballscrew and described right ball screw are located along the same line, and the screw flight line hand of spiral of the screw flight line hand of spiral of the described ballscrew that rolls left and described right ball screw is opposite;
Left sleeve and the right sleeve of pivot bush unit on the nut of described roll left ballscrew and described right ball screw respectively;
Toggle mechanism, comprise upper left toggle and the lower-left toggle that is articulated in respectively on the described left sleeve and be articulated in respectively upper right toggle and bottom right toggle on the described right sleeve, about the upper end of described upper left toggle and described upper right toggle extends upward respectively and is articulated on two fixed pivots, the lower end of described lower-left toggle and described bottom right toggle is respectively to downward-extension and be articulated in the two ends, the left and right sides of described pressure head.
Preferably, vertically be provided with radially rectangular opening of a left side on the described left sleeve, a described left side radially is provided with the left floating roller that can move up and down in the rectangular opening, and the upper end of the lower end of described upper left toggle and described lower-left toggle is articulated in respectively on the described left floating roller; Vertically be provided with radially rectangular opening of the right side on the described right sleeve, the described right side radially is provided with the right floating roller that can move up and down in the rectangular opening, and the upper end of the lower end of described upper right toggle and described bottom right toggle is articulated in respectively on the described right floating roller.Adopting the radially structure of rectangular opening and floating roller, is in order to solve straight-line motion mechanism (being left and right sides sleeve) and on-rectilinear movement mechanism (being toggle mechanism) when directly connecting, and mechanism freedom is zero problem.
Preferably, described upper left toggle and described upper right toggle arrange in described driven pulley bilateral symmetry, and described lower-left toggle and described bottom right toggle arrange in described driven pulley bilateral symmetry.More preferably, the angle of described upper left toggle and vertical direction is identical with the angle of described upper right toggle and vertical direction, and all more than or equal to 5 °.
Preferably, described forcing press also comprises fixedly truss, the upper end of described upper left toggle and described upper right toggle be articulated in respectively one fixedly truss about on two fixed pivots.
Preferably, the both sides of described pressure head also are installed be used to the limited block that limits described pressure head side-to-side movement.
Preferably, arrange between described driving wheel and the described driven pulley and be connected with synchronous cog belt and be in transmission connection.Described driving wheel also can be connected for gear drive with described driven pulley.
The present invention is based on the forcing press of ball screw and Toggle Force Amplifier, its operation principle is: during the servomotor rotation, the rotary power that produces passes to driven pulley by driving wheel, roll left ballscrew and the right ball screw at the rotating shaft two ends of driven pulley will rotatablely move and be converted to the horizontal rectilinear motion of left sleeve and right sleeve, the hand of spiral of the screw flight line of the screw flight line of ballscrew and right ball screw is opposite owing to rolling left, the direction of motion of left sleeve and right sleeve is opposite, be driven pulley when rotating, left sleeve and right sleeve do mutually near or mutually away from horizontal rectilinear motion; Toggle mechanism is converted to the horizontal rectilinear motion of left sleeve and right sleeve the vertical direction motion of pressure head again, thereby final the realization is converted to Output pressure and the return that makes progress that pressure head moves downward with the rotary power of servomotor.
Forcing press of the present invention adopts ball screw and Toggle Force Amplifier, with rotatablely moving by the driving wheel transmission to driven pulley of servomotor output, then ball screw will rotatablely move and convert rectilinear motion to again, make left and right sides sleeve do mutually near or mutually away from motion, and then the rectilinear motion of horizontal direction being converted to the rectilinear motion of vertical direction by toggle mechanism, the band dynamic head moves downward and carries out pressure processing or the return that moves upward.
Compared to prior art, a kind of forcing press based on ball screw and Toggle Force Amplifier provided by the invention has the following advantages:
(1) main advantage of the present invention is not only ball leading screw driving, but by the machine driven system that numerically controlled driven by servomotor gear or synchronous cog belt--ball screw--Toggle Force Amplifier are connected, realize the purpose of forcing press transmission greenization, speed numerical control, displacement precision;
(2) each basic structure is compact in the forcing press of the present invention, and motion accurately, and is easily manufactured, and equipment dependability is high, stable working.In addition, the suffered side force of press ram is symmetrical balance, thereby friction loss is little, and capacity usage ratio is high, long service life;
(3) adopt the machine driving of energy-conserving and environment-protective to replace the hydraulic transmission technology that low, the easy generation of energy utilization rate is polluted, make pressure function of the present invention better adapt to modern drive technology and manufacturing technology, meet trend and trend to the greenization future development.
(4) during ball leading screw driving, ball makes the relative motion of screw rod and nut become rolling friction, thereby makes the transmission efficiency of forcing press of the present invention higher, can reach more than 95%; The screw rod of ball screw and nut can obtain very high positioning accuracy (reaching 5 μ m/300mm) and repetitive positioning accuracy (can reach 1-2 μ m), and can improve axial precision, thereby make the positioning accuracy of forcing press of the present invention higher after adjusting pretension;
(5) ball leading screw driving can not produce crawl, so can realize correct microfeed, again high because of the ball leading screw driving sport efficiency, the heating low, and can make large helical pitch screw rod, so can realize high speed feed, be lower than under the prerequisite of ball leading screw driving critical speed in assurance, large helical pitch ball screw can be realized 100m/min even higher feed speed, thereby the operating efficiency of forcing press of the present invention is improved greatly.
Description of drawings
Fig. 1 is the structural representation of the first embodiment of a kind of forcing press based on ball screw and Toggle Force Amplifier of the present invention.
Fig. 2 is the structural representation of the second embodiment of a kind of forcing press based on ball screw and Toggle Force Amplifier of the present invention.
Fig. 3 be among Fig. 2 A-A to generalized section.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
Embodiment one
See also Fig. 1, the present embodiment provides a kind of forcing press based on ball screw and Toggle Force Amplifier, is used for the workpiece 200 on the workbench 100 of forcing press below is carried out pressure processing.Described forcing press comprises servomotor 10, the driving wheel 20 that is connected with the rotating shaft of described servomotor 10, the driven pulley 30 that is in transmission connection with described driving wheel 20 and the pressure head 40 that is used for output pressure, and wherein driving wheel 20 is connected by shaft coupling 11 with the rotating shaft of servomotor 10.Driving wheel described in the present embodiment 20 is gear with described driven pulley 30, and described driving wheel 20 is in transmission connection for the direct geared interlock with described driven pulley 30, and therefore the direction of rotation of described driven pulley 30 is opposite with the direction of rotation of described driving wheel 20.
Described forcing press also comprises the ballscrew 51 that rolls left, right ball screw 52, left sleeve 53, right sleeve 54, upper left toggle 55, left floating roller 56, lower-left toggle 57, upper right toggle 58, right floating roller 59, bottom right toggle 60, limited block 70.
The described respectively symmetrical two ends, the left and right sides that are connected in the rotating shaft of described driven pulley 30 of ballscrew 51 and described right ball screw 52 of rolling left, described driven pulley 30, the described axis that rolls left ballscrew 51 and described right ball screw 52 are located along the same line, and the screw flight line hand of spiral of the screw flight line hand of spiral of the described ballscrew 51 that rolls left and described right ball screw 52 is opposite.
Described left sleeve 53 and right sleeve 54 respectively pivot bush unit on the nut of described roll left ballscrew 51 and described right ball screw 52.
Vertically be provided with radially rectangular opening 530 of a left side on the described left sleeve 53, a described left side radially is provided with the left floating roller 56 that can move up and down in the rectangular opening 530, and the upper end of the lower end of described upper left toggle 55 and described lower-left toggle 57 is articulated in respectively on the described left floating roller 56; Vertically be provided with radially rectangular opening 540 of the right side on the described right sleeve 54, the described right side radially is provided with the right floating roller 59 that can move up and down in the rectangular opening 540, and the upper end of the lower end of described upper right toggle 58 and described bottom right toggle 60 is articulated in respectively on the described right floating roller 59.
The upper end of described upper left toggle 55 and described upper right toggle 58 extend upward respectively and be articulated in one fixedly the truss (not shown) about on two fixed pivots 81,82.The lower end of described lower-left toggle 57 and described bottom right toggle 60 is respectively to downward-extension and be articulated in the two ends, the left and right sides of described pressure head 40.
Described upper left toggle 55 and the angle of vertical direction and the identical α that is of angle of described upper right toggle 58 and vertical direction, and α is all more than or equal to 5 °.
Described limited block 70 is fixedly arranged on the both sides of described pressure head 40, is used for limiting described pressure head 40 side-to-side movements.
The forcing press course of work of the present embodiment is: when servomotor is rotated in the forward, driven pulley 30 reverse rotations, the rotation of driven pulley 30 drives roll left ballscrew 51 and 52 reverse rotations of right ball screw, left sleeve 53 and right sleeve 54 are done mutually close horizontal rectilinear motion, so that the angle α of the angle α of upper left toggle 55, lower-left toggle 57 and vertical direction and upper right toggle 58, bottom right toggle 60 and vertical direction diminishes simultaneously, move downward thereby promote pressure head 40, and produce downward pressure F
0, workpiece is carried out pressure processing; After the pressure processing process finishes, control system makes the servomotor reverse rotation, driven pulley 30 drives roll left ballscrew 51 and right ball screw 52 and is rotated in the forward, left sleeve 53 and right sleeve 54 do mutually away from horizontal rectilinear motion, so that the angle α of the angle α of upper left toggle 55, lower-left toggle 57 and vertical direction and upper right toggle 58, bottom right toggle 60 and vertical direction becomes greatly the homing thereby band dynamic head 40 moves upward simultaneously.
Embodiment two
See also Fig. 2 and Fig. 3, the difference of the present embodiment and embodiment one is, described driving wheel 20 is in transmission connection by synchronous cog belt 23 mutually with described driven pulley 30, and described driven pulley 30 is identical with the direction of rotation of described driving wheel 20.
Its course of work of the forcing press of the present embodiment is: during the servomotor reverse rotation, driving wheel 20, driven pulley 30 reverse rotations, the rotation of driven pulley 30 drives roll left ballscrew 51 and 52 reverse rotations of right ball screw, left sleeve 53 and right sleeve 54 are done mutually close horizontal rectilinear motion, so that the angle α of the angle α of upper left toggle 55, lower-left toggle 57 and vertical direction and upper right toggle 58, bottom right toggle 60 and vertical direction diminishes simultaneously, move downward thereby promote pressure head 40, and produce downward pressure F
0, workpiece is carried out pressure processing; After the pressure processing process finishes, control system is rotated in the forward servomotor, driven pulley 30 drives roll left ballscrew 51 and right ball screw 52 and is rotated in the forward, left sleeve 53 and right sleeve 54 do mutually away from horizontal rectilinear motion, so that the angle α of the angle α of upper left toggle 55, lower-left toggle 57 and vertical direction and upper right toggle 58, bottom right toggle 60 and vertical direction becomes greatly the homing thereby band dynamic head 40 moves upward simultaneously.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. forcing press based on ball screw and Toggle Force Amplifier, it is characterized in that, described forcing press comprises servomotor, the driving wheel that is connected with the rotating shaft of described servomotor, the driven pulley that is in transmission connection with described driving wheel and the pressure head that is used for output pressure, and described forcing press also comprises:
Be connected to roll left ballscrew and the right ball screw at two ends, the left and right sides of the rotating shaft of described driven pulley, described driven pulley, the described axis that rolls left ballscrew and described right ball screw are located along the same line, and the screw flight line hand of spiral of the screw flight line hand of spiral of the described ballscrew that rolls left and described right ball screw is opposite;
Left sleeve and the right sleeve of pivot bush unit on the nut of described roll left ballscrew and described right ball screw respectively;
Toggle mechanism, comprise upper left toggle and the lower-left toggle that is articulated in respectively on the described left sleeve and be articulated in respectively upper right toggle and bottom right toggle on the described right sleeve, about the upper end of described upper left toggle and described upper right toggle extends upward respectively and is articulated on two fixed pivots, the lower end of described lower-left toggle and described bottom right toggle is respectively to downward-extension and be articulated in the two ends, the left and right sides of described pressure head.
2. a kind of forcing press based on ball screw and Toggle Force Amplifier according to claim 1, it is characterized in that: vertically be provided with radially rectangular opening of a left side on the described left sleeve, a described left side radially is provided with the left floating roller that can move up and down in the rectangular opening, and the upper end of the lower end of described upper left toggle and described lower-left toggle is articulated in respectively on the described left floating roller; Vertically be provided with radially rectangular opening of the right side on the described right sleeve, the described right side radially is provided with the right floating roller that can move up and down in the rectangular opening, and the upper end of the lower end of described upper right toggle and described bottom right toggle is articulated in respectively on the described right floating roller.
3. a kind of forcing press based on ball screw and Toggle Force Amplifier according to claim 1, it is characterized in that: described upper left toggle and described upper right toggle arrange in described driven pulley bilateral symmetry, and described lower-left toggle and described bottom right toggle arrange in described driven pulley bilateral symmetry.
4. a kind of forcing press based on ball screw and Toggle Force Amplifier according to claim 3 is characterized in that: the angle of described upper left toggle and vertical direction is identical with the angle of described upper right toggle and vertical direction, and all more than or equal to 5 °.
5. a kind of forcing press based on ball screw and Toggle Force Amplifier according to claim 1, it is characterized in that: described forcing press also comprises fixedly truss, the upper end of described upper left toggle and described upper right toggle be articulated in respectively one fixedly truss about on two fixed pivots.
6. a kind of forcing press based on ball screw and Toggle Force Amplifier according to claim 1, it is characterized in that: the both sides of described pressure head also are installed be used to the limited block that limits described pressure head side-to-side movement.
7. the described a kind of forcing press based on ball screw and Toggle Force Amplifier of any one is characterized in that: have synchronous cog belt to be in transmission connection between described driving wheel and the described driven pulley according to claim 1-6.
8. the described a kind of forcing press based on ball screw and Toggle Force Amplifier of any one according to claim 1-6, it is characterized in that: described driving wheel is that gear drive is connected with described driven pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104184096A CN102909875A (en) | 2012-10-26 | 2012-10-26 | Press machine based on ball screw and hinged rod force amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104184096A CN102909875A (en) | 2012-10-26 | 2012-10-26 | Press machine based on ball screw and hinged rod force amplifier |
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| CN102909875A true CN102909875A (en) | 2013-02-06 |
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| CN2012104184096A Pending CN102909875A (en) | 2012-10-26 | 2012-10-26 | Press machine based on ball screw and hinged rod force amplifier |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103991230A (en) * | 2014-05-14 | 2014-08-20 | 苏州农业职业技术学院 | Transmission type double-station punching machine with crank connecting rod structure |
| CN103991234A (en) * | 2014-05-14 | 2014-08-20 | 苏州农业职业技术学院 | Transmission type double-station punching machine |
| CN104162999A (en) * | 2014-05-16 | 2014-11-26 | 苏州工业职业技术学院 | Double-station numerical control punching machine |
| CN104163000A (en) * | 2014-05-16 | 2014-11-26 | 苏州工业职业技术学院 | Double-station pneumatic punching machine |
| CN108131235A (en) * | 2018-01-25 | 2018-06-08 | 佛山科学技术学院 | A kind of two-pass reciprocating swing type wave energy generating set |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991230A (en) * | 2014-05-14 | 2014-08-20 | 苏州农业职业技术学院 | Transmission type double-station punching machine with crank connecting rod structure |
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| CN104162999A (en) * | 2014-05-16 | 2014-11-26 | 苏州工业职业技术学院 | Double-station numerical control punching machine |
| CN104163000A (en) * | 2014-05-16 | 2014-11-26 | 苏州工业职业技术学院 | Double-station pneumatic punching machine |
| CN108131235A (en) * | 2018-01-25 | 2018-06-08 | 佛山科学技术学院 | A kind of two-pass reciprocating swing type wave energy generating set |
| CN108131235B (en) * | 2018-01-25 | 2023-12-26 | 佛山科学技术学院 | Double-stroke reciprocating swing type wave energy power generation device |
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Application publication date: 20130206 |